Axisymmetric adjustable air inlet passage central cone body boundary layer suction removing structure

The invention belongs to the technical field of aircrafts, and particularly relates to an axisymmetric adjustable air inlet passage central cone body boundary layer suction removing structure. In thestructure, a center cone is arranged on a center cone rod and can slide forwards and backwards in the axis direction; the central cone rod is fixed to a shell through a hollow support plate; and a whole air inlet passage flow channel is divided into a main flow channel, a support plate cavity, a central cone rod cavity, a suction removing cavity and an actuating mechanism cavity. In the working process, after incoming flow air enters an air inlet passage, a boundary layer sequentially passes through a boundary layer suction removing hole, the suction removing cavity, a flow guide hole, the central cone rod cavity and the support plate cavity, and finally exhausting into the atmosphere at the position of an outlet is achieved. The problem that boundary layer gas at the central cone positionof the axisymmetric adjus